I learned last week that I would be able to plug in and not too soon with all this cold weather. A 110 plug is all I need for a full charge in less than 7 hrs that I am plugged in. I would recommend it to anyone's work for the maintenance of your batteries as well as being able to heat your car and windows plugged in before you drive home. I did not have to pay anything additional the school honored the earlier agreement. Thank you to FVEAA for encouraging me through it all!!!